Mobile mixing attachments, skidsteers with mobile mixing attachments, mobile mixing devices and related methods are provided. A mobile mixing attachment for use on a skid-steer can include a rotatable mixing drum having a body that forms an internal cavity and having a forward end and a bottom end. The mixing drum can include a mouth at the forward end of the body that provides access to the internal cavity of the mixing drum. The mobile mixing attachment can include a drum chassis configured to hold and rotate the mixing drum and an attachment plate secured to a rear portion of the drum chassis proximal to the bottom end of the body. The attachment plate configured to engage one or more attachment couplers on lift arms of a skid-steer. The mobile mixing device also comprises a scoop comprising a forward scooping lip and a rear loading end positioned in front of the mouth of the mixing drum. The scoop is secured to the drum chassis.